Electromagnetic talking machine



Juiy 21, 1936. s. BEGUN ELECTROMAGNETIC TALKING MACHINE Filed May 18, 1935 In Van for fiem/ Eegun 5y @W jfiarzz 0y UNITED STATES PATIENT oFFIcE 2,048,488 ELECTROMAGNETIC TALKING MACHINE Semi Begun, Berlin, Germany, assignor to C. Lorenz Aktien'gesellschaft, Berlin-Tempelhof,

Germany, a company Application May 18, 1935, Serial No. 22,142 In Germany May 29, 1934 2 Claims. (Cl. 33-129) The invention relates to electromagnetic talkwheels 6, 1, 8, 9 are located within it, as will be ing machines of the kind having a steel tape or seen from Fig. 2, the plate ll being disposed at wire arranged to serve as a record carrier. the open face end of the wheel I.

Devices of this type are known wherein means The pointer H1 in a well known manner indiare connected to the power shaft for indicating 'cates how far the tape 3 has been moved at any 5 how much of this steel tape or wire has been moment.

coiled or uncoiled at any time. From such indi- What is claimed is: cation the beginning and the end of a record may 1. In an electromagnetic talking machine of the be ascertained at any moment. type used with flexible record filaments, a record In the novel arrangement the driving wheel driving wheel having a hollow in one end adapted 1o engaging the tape or wire is made to encompass to engage such a record filament over at least half the gearing by which the pointer of the indicating the circumference of said wheel, a stationary device is coupled with the shaft of this wheel, plate positioned adjacent that end of said wheel i. e. the power shaft of the talking machine. The which has said hollow, a train of gears mounted arrangement is preferably such that the axis of on said plate and positioned inside the hollow'of 15 rotation of the pointer is in line with the power said wheel, a gear fixed to said wheel and in enshaft. In this way the indicating device is given gagement with said train whereby the train of a construction which is simple and forms a progears is actuated by rotation of said Wheel, and a tective casing to the gearing. pointer on the side of said plate remote from said The invention will be understood from the folwhe l, s id p n r being rotatable y Said r in 20 lowing description and be particularly pointed out of gears in response to the rotation of said wheel. in the appended claims, reference being had to the 2. In an electromagnetic talking machine of accompanying drawing in which the type used with flexible steel record tapes, a Fig. l is a sectional view, the section being on stationary f a Plate, a Pointer u ted on the line A-B of Fig. 2, and Fig. 2 a section on the said plate so as to be rotatable adjacent one face 5 line C-D of Fig. 1. of the plate, a train of gears mounted on the op- Fixed on a power shaft 2 is a wheel I engaging posite face of the plate and connected to actuate a steel tape 3 which is the sound record carrier. said pointer, a power shaft connected to actuate The tape is arranged to pass around a pulley 4 "said train of gears, said shaft being coaxial with onto wheel I and thence around a pulley 5, A the axis of rotation of said pointer, and a hollow 30 pinion 6, fastened to shaft 2, meshes with a wheel fixed to said shaft and surrounding said toothed wheel 1 rigidly connected with a pinion 8, gears, said wheel being adapted to engage a The axle 13 of the wheels I, 8 is rotatably mounted record tape over a substantial part of the wheels in a plate I I. Meshing with pinion 8 is a toothed circumference whereby said tape is driven simulwheel 9 whose axle I2 is likewise rotatably taneously with said pointer in response to the ro- 35 mounted in plate II. The axle I2 is in line with tation of said shaft. shaft 2 and carries a pointer I0 arranged in front SEMI BEGUN. pf the plate II. The wheel I is hollow and the 

